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Fault tracing 409
7301
Motor speed feedback
Programmable fault:
90.45
Motor feedback fault
No motor speed feedback
received.
Encoder speed differs too
much from internal speed
estimate.
Aux code 4 = Drift detected.
Aux code 3FC = Incorrect
motor feedback configuration.
Check the parameter
90.41
setting and
the actual source selected.
Check electrical connection of the
encoder and pulse sin/cos nr.
7310
Overspeed
Motor is turning faster than
highest allowed speed due to
incorrectly set
minimum/maximum speed,
insufficient braking torque or
changes in load when using
torque reference.
Check minimum/maximum speed
settings, parameters
30.11
Minimum
speed
and
30.12
Maximum speed
.
Check adequacy of motor braking torque.
Check applicability of torque control.
Check need for brake chopper and
resistor(s).
7381
Encoder
Programmable fault:
90.45
Motor feedback fault
Encoder feedback fault.
See
A7E1
Encoder
(page
397
).
73F0
Overfrequency
Maximum allowed output
frequency exceeded.
Check minimum/maximum frequency
settings, parameters
30.13
Minimum
frequency
and
30.14
Maximum
frequency
.
Check adequacy of motor braking torque.
Check applicability of torque control.
Check need for brake chopper and
resistor(s).
00FA
Motor is turning faster than the
highest allowed frequency due
to incorrectly set
minimum/maximum frequency
or the motor rushes because of
too high supply voltage or
incorrect supply voltage
selection in parameter
95.01
Supply voltage
.
Check minimum/maximum frequency
settings, parameters
30.13
Minimum
frequency
and
30.14
Maximum
frequency
.
Check used supply voltage and voltage
selection parameter
95.01
Supply
voltage
.
Other
-
Contact your local ABB representative,
quoting the auxiliary code.
73B0
Emergency ramp
failed
Emergency stop did not finish
within expected time.
Check the settings of parameters
31.32
Emergency ramp supervision
and
31.33
Emergency ramp supervision delay
.
Check the predefined ramp times
(
23.11
…
23.15
for mode Off1,
23.23
for
mode Off3).
Code
(hex)
Fault / Aux. code
Cause
What to do
ACS380 FW.book Page 409 Friday, May 4, 2018 4:18 PM
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